What is the CVSS score of CVE-2025-49668?

CVE-2025-49668 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Windows Server 2008 are affected by CVE-2025-49668?

CVE-2025-49668 is a heap-based buffer overflow in Windows RRAS that enables unauthenticated remote code execution with high severity (CVSS 8.8).. A patch is available.

How to fix or mitigate CVE-2025-49668?

Within 24 hours: identify all Windows systems running RRAS using network discovery tools and asset management systems; quarantine or restrict network access to affected RRAS servers if patch cannot be immediately applied. Within 7 days: apply vendor-released patch to all identified RRAS systems and verify successful deployment. Within 30 days: conduct network segmentation audit to limit RRAS exposure, implement network-based detection rules for exploitation attempts, and review access logs for suspicious RRAS connections.

Windows Server 2008 CVE-2025-49668

EUVD-2025-20576 HIGH

Heap-based Buffer Overflow (CWE-122)

2025-07-08 secure@microsoft.com

Microsoft Heap Overflow Buffer Overflow Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2022 Windows Server 2025 Windows Server 2019 Windows Server 2022 23h2 Windows

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:31 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

6.1.7601.27820,10.0.25398.1732,6.2.9200.25573

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20576

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

CVE Published

Jul 08, 2025 - 17:15 nvd

HIGH 8.8

DescriptionCVE.org

Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.

Analysis

Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.

Technical ContextAI

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state. This vulnerability is classified as Heap-based Buffer Overflow (CWE-122).